Apparatus for pulverizing, desulfurizing, or oxidizing metallic and other ores.



I R. LUGKENBAGH. APPARATUS FOR PULVBBIZING, DESULFUBIZING, 0B OXIDIZINGMETALLIC AND OTHER OBBS. APPLICATION IILBD OOT. 2 4, 1907. RENEWED SEPT.16, 1909.

938,005. Patented Oct. 26, 1909. 2 BHBETB-BHEET 1.

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UNITED STA ES PATENT OFFICE.

ROYER LUCKENBACH, or COLWYN, PE NSYLVANIA, ASSIGNOR T0- BoRINDum ExTRAo-I TION COMPANY, A CORPORATION or ARIZONA TERRITORY. f

APPARATUS FORPULVERTZING DESULFURIZING, OR OXIDIZING METALLIC AND OTHERORES.

938,005; Application To all whom it may concern:

, Be it known that I, ROYER LUCKENBACH, a citizen of the United States,residing at the city of Colwyn, in the county of Delaware and State ofPennsylvania, have invented certain new and useful Improvements inApparatusfor Pulverizing, Desulfurizing, or Oxidizing Metallic and otherOres, of which the following is a specificas tion. My invention hasrelation to an apparatus for pulverizing or grinding by attrition,metallic and other ores to a finely divided state or impalpable powderedcondition, as well as under certain conditions in the treatingof-metallic sulfid ores, as gold and silver, in reduction to a finelydivided state, desulfurizing or oxidizing, to bring into a free millingcondition so as to effect amalgamation or concentration by employing asolution or amalgam for such purpose; and in such connection my presentinvention relates more particularly to the constructive ar-' rangementof apparatus for the defined purposes of the invention.

The nature and scope of my said invention will be more fully understoodfrom the following description taken in connection with the accompanyingdrawings forming part hereof, in which Figure 1 is a longitudinalsectional View, partly in elevation of an apparatus embodying featuresof my invention in one form for, reducing crushed ore matter to apulverized or impalpable powdered condition. Fig. 2 is a transversesectional view on the line 00, 0a, of Fig. 1, showing means for introducing superheated steam and com pressed air for desulfurizing andoxidizing metallic ore matter during treatment in the apparatus and Fig.3 is a vertical sectional view, partly in elevation, of a modified formof apparatus forthe defined purposes of my invention.

Referring to the drawings 4, in Figs. 1' and 2, represents a shell orcasing arranged longitudinally and provided with supporting standards 5and 6, a feed-hopper 7 and a bearing 8, for one end of a shaft 9,carry-. ing a driving pulley 10, a discharge chute 11 and having an endplate12, detachably secured to the shell with a bearin 13, for the otherend of the shaft 9, as clear y shown in Fig. 1. 14 is an innercone-shaped grindingor pulverizing device or drumloosely supported inSpecification of Letters Patent. Patented ()gt, 26,1909,

filed October 24, 1907, Serial No. 398,917.

Renewed September 16, 1909. Serial No. 518,075.

an inclined position longitudinally of the shell or casing 4,and'arranged to eccentric,- ally revolve, within the shell or casingagainst crushed Ore matter in the grinding or pulverizing of the same bythe said device against the shell. The device or drum 14, is held undertension within the casing or shell 4, by means of a coiled spring 15,which abuts against an inserted end plate 16, of the drum and end plate12, of the shell orv casing 4, and respectively, connected therewith.Mounted in the device or drum 14, and bearing" against the inner surfaceOfthe I same is a series of roller bearing bars 17 connected by means ofend brackets 18 an 19, with the shaft 9, and interposed between the saidbrackets for the roller' bearing means 17, and connection 20 and 21,with the shaft 9, are coiled springs 22and 23, acting as bumpers forsaid bearing means and by which the said bearing means are maintained inan operative position as shown in Fig. 2, to actuate the device or drum14, supported in operative position thereby within the shell 4, and tocause the same to be operated around against the shell or casin 4, so asto permit the crushed ore matter falling through the hopper 7, and thethroat 7 thereof, into the inclined chamher 7 to be ground or pulverizedby the ac tions of the device 14, by degrees gradually to an. impalpablepowder and then by gravity to be discharged through the chute 11, awayfrom the pulverizer. The grinding device, or drum 14, is maintained 1noperative position loosely connected with the shaft 9, by means offriction rings 24 and 25, to enable the roller bearing means 17, toeccentrically impart a gyratory motion to said grinding device'14, withthe attending 'efi'ects by attrition upon the ore matter undergoingtreatmentbetween the said device or drum 14, and shell or casing 4.Moreover, the rings 24 and 25, prevent any shifting of the drum tointerfere with 100 the roller bearing means 17 in itsaction upon thedrum 14, with the shell 4, in order that the best possible action of thedrum upon ore matter to be reduced to an impalpable powder can be had,by the eccentric gyratory movements of the'same, within the shell 4. Inthe treatment of sulfid orother metallic ores, containing gold andproviding pipes 26 and 27 with regulating cocks 28 and 29, can'beintroduced respectively, therethrough into the grinding chamber 7 wherethe ore matter is undergoing treatment, superheated steam and air orother gases, to effect not only desulfurization 0 the ore matter, butalso oxidation, which in some instances, is desirable, beforeconcentration or amalgamation of the same. The eflectof the superheatedsteam is to desulfurize and the air or other gas to oxidize themetallicmatter of the pulverized ore gody reduced to an impalpable powdered orm.

In Fig. 3, the a paratus is the same as iny'signature in the presence ofthe two subthat already fully escribed in all main fea;

tures of the invention, save that the Work ing parts are arrangedvertically instead of horizontally as in Fig. 1, but the actions of theworking parts upon matter to be reduced are the same.

Having thus described the nature and obeas,oo5

therethrough, a spring controlled grinding drum located in the shell,roller-bearing means connected with said shaft and means for holdingsaid roller bearings under tension in contact withsaid drum against theinfluence of matter fed between the 'shell 4o as and for the purposesdescribed.

2. A pulverizin or grinding apparatus, comprising a shel arranged toprovide a and drum in rotations thereof, substantially feed-hopper and adischarge-chute, a driven shaft therein, aspring controlled grindingdrum mounted insaid shell, roller-bearing means connected with said saidshaft and held to said drum by sprin bumpers against the influence ofmatter shell and drum in rotations thereof, substantia-lly as and forthe purposes described. In witness whereof, I have hereunto set scribingwitnesses hereto.

ROYER LUOKENBAOH. Witnesses:

WILHELM Voe'r, THOMAS M. SMITH.

ed between said

